package com.melodyhub.diy;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

@Aspect  //标注这个类是一个切面
public class DiyAnnotation {

    @Before("execution(* com.melodyhub.service.UserServiceImpl.*(..))")
    public void before(){
        System.out.println("=====方法执行前=====");
    }

    @After("execution(* com.melodyhub.service.UserServiceImpl.*(..))")
    public void after(){
        System.out.println("=====方法执行后=====");
    }

    //在环绕增强中，我们可以给地暖管一个参数，代表我们要获取切入的点
    @Around("execution(* com.melodyhub.service.UserServiceImpl.*(..))")
    public void around(ProceedingJoinPoint joinPoint) throws Throwable {
        System.out.println("环绕前");

        Signature signature = joinPoint.getSignature();//获得签名
        System.out.println("signature:"+signature);

        //执行方法
        Object proceed = joinPoint.proceed();

        System.out.println(proceed);

        System.out.println("环绕后");

    }
}